Experimental investigation of average heat-transfer and friction coefficients for air flowing in circular tubes having square-thread-type roughness

Sams, Eldon W.
naca-rm-e52d17
1952

(abstract not available)

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1952/naca-rm-e52d17.pdf